Questions tagged [science-based]

For questions that require answers based on hard science, not magic or pseudo-science, but do not require scientific citations. Contrast with the hard-science and reality-check tags. Do not use this tag as the only tag on a question.

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6
votes
1answer
166 views

Would dragons be able to purr?

My dragons have a... "difficult" personality. They're very catlike. Sure, they're more like KrimsonRogue's cat (somewhere around chaotic good). But, if I want to make my dragons smug, blue-...
5
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2answers
153 views

How plausible are underwater trees?

In the process of developing an ocean world setting for my fiction, I have often pondered whether to give the sapient species of the world access to some form of wood or other resource from underwater ...
0
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1answer
50 views

How would Filter Feeding Fungal Forests affect the ocean ecosystems

So, I'm asking this on behalf of a seeded world project. There are no corals, sponges, kelp, or anemones in this world's oceans (although there are seagrasses); instead, all those roles are taken up ...
3
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2answers
136 views

Which countries/organizations are most likely to ensure survival on a freezing Earth?

I am writing some fiction about a freezing Earth. My previous questions about it were mostly about the physics aspects of it. After watching the Snowpiercer movie, I'd like to explore a human aspect. ...
2
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1answer
82 views

Effects of a Super High Velocity Cannon on a Planet

In the 23rd century, humans are at war with a technologically advanced alien species. Humans discovered a method of faster than light travel during early stages of this war when an alien capital ship ...
2
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1answer
60 views

Feedback/help on planetary density?

I’m at a bit of a wall here. I have numbers for mass, radius, and gravity for my planet (Neogaea), but the density is escaping me. Mass: 1.31 earth masses Radius: 1.027 earth radius Gravity: 1.25 ...
0
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3answers
141 views

Tidal Effect of Twin Moons

In order to account for an immense amount of technological and cultural disparity, I have been attempting to figure out ways that the world in a setting could be extremely hostile to travel. The idea ...
3
votes
1answer
78 views

What technology would a probe need in order to become a self-sustaining colony-constructor?

In a science fiction setting, in the not-too-distant future, people want to send robotic probes out into space - both to explore and to set up boostrap space colonies. They need to be designed to be ...
4
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2answers
182 views

How Would a Six-Winged Angel Fly?

This image by the DeviantArtist "jerica128" presents what I believe to be the best demonstration of angel anatomy: Source for the image above That said, they are actually not the only ...
3
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3answers
111 views

How would airbubbles/moonpools be achieved in a deepwater marine mammal civilisation?

I am developing an ocean world for a story involving marine mammals, and the biggest issue I cannot settle on is whether to have deep or shallow civilisations. The main concern is that their ...
11
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2answers
2k views

What would make a plant's leaves razor-sharp?

Imagine a field of plants that when walked through cuts human skin. Unlike a Stinging Nettle, the leaves would have to have razor-like edges, without the trichome hairs. The leaf edges should cause a ...
5
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3answers
156 views

How do you make scientific progress happen in the presence of superpowers?

With superpowers, people would lose the desire to build machinery as superpowers can perform most purposes, and people would be less interested in studying the environment than wielding superpowers (...
5
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2answers
203 views

How Precisely Can a Space Cannon be Targeted?

If I have spaceships that are firing some variety of cannon at each other - MAC, laser, particle cannon, doesn't really matter the type - at extreme range, then even if the gun itself were somehow ...
6
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2answers
628 views

How would a black lightning storm work?

"If you shine a low-pressure sodium lamp on a yellow sodium flame, the flame will be black." I shamelessly stole the above text from somewhere but it whetted my curiosity. I am wondering if ...
3
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5answers
258 views

How to incorporate scientific development into fantasy/sci-fi?

In the Avatar the Last Airbender manga/comic and Avatar The Legend of Korra, scientific advancement took over industrial work replacing bending. Eventually nuclear weapons would be found (as well as ...
12
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7answers
3k views

How to get blue sand

I want to have a blue furred species native to a desert in the world I'm building, so the obvious way to have that is to have the sand of that desert be blue so they are camouflaged. I could just say ...
4
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1answer
132 views

Could a world exist without autotrophs, but have heterotrophs?

I was watching Biblaridian’s biosphere videos and he said it is believed that heterotrophs evolved before autotrophs. This gave me a cool idea: what if a (my) world had heterotrophs, but no autotrophs?...
3
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0answers
96 views

Are these ocean currents realistic for a planet that rotates 16 times slower than Earth?

Ocean Current Map: The straight red lines are 60* North and South, and the straight blue lines are 30* North and South. The curved blue lines with an arrow represent cold currents, while the curved ...
3
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2answers
86 views

Could a human sized creature with a skeletal structure similar to a gibbon's be bipedal?

Would a creature that's 180 - 210 cm tall walk and run comfortably upright for long distances if they have shorter legs than humans, no lordosis and arms (though shorter than a gibbon's) whose wrists ...
4
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8answers
3k views

Replacing the core of a planet with a sun, could that be theoretically possible?

We have a sun that is like ours, does not matter I think because of scaling. That sun is completely encased in large rock formations like that of a planet. Basically if you replace the core of a ...
3
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2answers
546 views

Would Venusian Sunlight Be Too Much for Earth Plants?

This is Chris Wayans's map of a terraformed Venus: While there have been questions in this Stack Exchange on how to make Venus more livable for us humans, one question stands glaringly absent, and ...
9
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2answers
224 views

How far would a goblin-powered plane go?

There are a few flying questions lately and this got me thinking. Someone suggested that a centaur might power a plane via a bicycle. I don't think this would work out, since the centaur would be very ...
4
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3answers
177 views

Applying this kind of physical magic to walk on air

I have a magic system with very specific physical rules (hence why the question is science-based), but I need help working out a specific scenario. Also feel free to suggest better terminology where ...
9
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3answers
1k views

I need a systematic way to consider all crucial factors when building different kinds of near-future cities

I'm crafting the worlds and cultures of my own Alien societies and a near-future human world (near-future Earth), it's the first time I've attempted this in detail. Everything I've found so far about ...
7
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5answers
272 views

How fast would I have to flap my arms in order to fly?

Suppose I am a super-being. From the outside I look and act exactly like an ordinary human. My flexibility of limbs is the same as that of a human so I can't shape-change or bend my arms unnaturally. ...
2
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3answers
86 views

Science-based WMD styled weapons? [closed]

I've been thinking about possible super weapons for a little while now, but I'm not really sure of any ideas that could fit into a semi-realistic setting. One idea I had was firing out a slug of ...
14
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7answers
1k views

What would martial arts for dragons look like?

So, since my dragons have a lot of limitations that are needed for flight, I thought it was to make them some strengths. Two that still remain are their intelligence and long life, which can result in ...
5
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2answers
158 views

How would mermaids protect themselves against electricity?

There are some underwater electric beasties, in the sea. And, in a fantasy world... nature is always worse. My thoughts and ponderances So, let's say the mermaids do have rubber, for simplicity. Great....
8
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2answers
180 views

Can a rogue planet have a habitable surface due to geothermal heat?

I am making a rogue planet. Right now it is a super-earth with a lot of radioactive materials in its core. It rotates very quickly as well. However, it needs to be habitable. And not just the deep ...
5
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1answer
78 views

I need help with the scale for an island

Okay, so I have an island where the story will be based in and around. It's actually more of an atoll, similar to Bikini or Kwajalein in the Marshalls, with the island parts being in somewhat of a ...
4
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1answer
94 views

How Many Red Dwarves Can Make One Stable P-Orbit?

Red dwarves are the most common stars in our galaxy, if not the whole universe. They are small--the largest don't exceed one-half of a solar mass--but scientists still believe in their potential for ...
3
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1answer
116 views

How can the dragon NORAD keep everyone safe and in its sights with minimal resources?

POV: Dragons live in an island group, referred to as Io's Blood. While there's still some tension between its resident clans, they managed to come together under The Council of Wyrms, which acts as ...
4
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2answers
64 views

If the Earth became a rogue planet would there be any way to push it into orbit again?

I've recently begun writing a sci-fi story about what would happen if an asteroid or another larger object would fly close enough to the earth to knock it out of its orbit and send it flying away from ...
7
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2answers
253 views

Plausibility of a cosmic flashbulb

Pendorain, admiral of the illustrious Tenth Fleet, had gathered its fleet near the Xzlicyan Pulsar to nurse its wounds. Battle against the hated Andecklin was not going well. The fleet was using the ...
5
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1answer
103 views

Two Worlds tethered together - how would the forces affect people on the planets?

^ Not to scale Assumptions These worlds are engineered. So some aspects of the worlds can be manipulated. Equal Earth-sized planets. Tether attaching them is infinitely strong. Their separation is ...
4
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1answer
196 views

how could a creature have a vacuum chamber inside its body

i want to know how an animal could have a vacuum inside itself (in an organ), survive, and also for it to be stable, what materials could be used to contain it, and how could it be implemented without ...
11
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10answers
2k views

Could 1950s technology detect / communicate with satellites in the solar system?

I'm working on an alternate-history story in which peaceful alien satellites are surveying the solar system and passively observing human activity. Many of the deep-space satellites would have been in ...
5
votes
3answers
276 views

What evolutionary pressures would lead to Ogres?

In a world I am writing, there is a species with a super-expansible stomach called ogre. They look a little bit like Shrek ogres (they do not like to eat humans, they are as intelligent as humans but ...
10
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10answers
1k views

Proof for extracerebral origin of thoughts

In a world which to a visitor coming from our own world would appear to be identical to our own, the mental processes (thoughts, emotions, memory) do not occur in the brain. That is, memory isn't ...
4
votes
4answers
487 views

Scientifically Plausible Ranged Pain-inducing Weapon?

So, one of my characters was meant to be a Mr.Godcomplex type of guy, complete with the "Spare the child, spoil the rod" mentality towards his underlings and a penchant for making examples ...
3
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3answers
184 views

Is this rogue planet capture process possible?

I have a prelude to a story which involves a rogue planet entering the solar system, However I am concerned as to its realism. All of this is supposed to be based on real physics and rules; there's ...
6
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5answers
2k views

Ideal way to deactivate a Sun Gun when not in use?

I came across one space weapon, known as the Sun Gun, which uses a concave mirror on a satellite to concentrate sunlight onto a small area at the Earth's surface, making a hot beam of death. ...
3
votes
1answer
97 views

Could a “super-Enceladus” moon exist?

Firstly, let us define the term "Super-Enceladus". In the context of this question, a "Super-Enceladus" is a moon that has permanent or near-permanent polar jets spewing out matter ...
8
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4answers
2k views

Can Multiple Stars Naturally Merge Into One New Star?

Assume just for this question that in one same plane of space, there are the following stars within close proximity of each other: An O-type main-sequence star (18x wider, 15-90x more massive and 40k-...
1
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2answers
106 views

Could you develop Electrolysis with Pre-Modern technology?

Electrolysis was a popular idea for how mermaids would generate oxygen for their guests. This leads to another question: Is it possible to perform electrolysis with pre-modern technology? Electrolysis ...
0
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0answers
33 views

Life in the Temperate Zone of an Alternate Earth with an Axial Tilt of 42 Degrees--What Would the Seasons Be?

Suppose that in an alternate universe, Earth has an axial tilt not of 23.5 degrees, but 42. This means that from the equator, tropical climates with binary seasons (wet and dry) would persist from as ...
4
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1answer
178 views

Humanoids with wings, how do they take off?

Remember when I said that flying creatures are a nightmare to design? Well, looks like dragons and gryphons were just the beginning, we still have two other species to cover, and they're worse. ...
3
votes
1answer
78 views

What (if anything) can cause a substantial and stable shift of the magnetic poles of a habitable planet away from its geographical ones?

Most planets have magnetic poles that align pretty well with their geographical ones. On earth, for example, the magnetic dipole field is tilted about 11 degrees from the rotational axis. As far as I ...
6
votes
2answers
187 views

Could a red giant be re-stabilized?

First, some context: I am creating a habitable world with intelligent life present in the second main sequence of a star (hence why it needs to be re-stabilized). This life discovers the ruins of an ...
1
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3answers
110 views

Reinforcing a fused ribcage to be more bullet resistant, how?

So, dragons, wyverns, gryphons, bird people, pterosaurs, etc... Every flier shares the problem of toughness (the lack of it) when compared to grounded creatures. The only path we can go down on is ...